Being an aunt or uncle to a niece is an extremely important role and comes with great responsibility.
You are a source of protection and love in the early years and can become real friends on their transition into womanhood. For this reason, your birthday messages to her can mean an awful lot, but it can feel like an impossible task trying to find the perfect way to express your good wishes.
RELATED: Happy Sweet 16! Beautiful Wishes For Super Sweet 16.
Luckily, we have come up with a huge list of ideas for any struggling aunts and uncles out there.
So, pick your card, pick a message, and all that will be left to do is to pick a present!
Happy Birthday Niece Messages
Happy Birthday to my wonderful niece. Bringing you into the world is the best thing my brother/sister ever did!
My niece has watched the sun make another full turn around the world. Happy Birthday to a true ray of sunshine.
I love my niece to the sun and back (because the moon is not far enough).
Niece, there has been no finer duo since mac and cheese. Wishing you a very happy birthday, which I hope is filled with tasty treats!
Happy Birthday to my wonderful niece who has blossomed into a beautiful woman.
Wishing my amazing niece, a very happy 18th. I cannot believe you are now an adult! It seems like only yesterday I was having my first cuddle with you in my arms.
To a niece who has a wonderful soul and spreads happiness and joy wherever she goes, a very Happy Birthday to you!
I want you to know that the greatest gift I have ever had, is having you for a niece.
Niece, I want you to know that I did not realize there was anything missing in my life until you were born. Since then, you have been nothing but complete and total joy!
To a dear niece, as another year goes by, I have one piece of advice: Do not count the years in your life. Make the years in your life count.
To a dear niece who fills my heart with endless happiness, Happy Birthday and thank you for being you.
Happy Birthday to a niece so sweet I want to put her in my coffee!
Wishing a niece with an infectious smile and boundless energy a very happy birthday.
Happy Birthday niece. I hope your day is filled with fun, presents, and lots of cake!
Happy Birthday to a niece who inspires me to be more like her! You deserve every happiness on your special day.
Happy Birthday to a niece who takes on every day with kindness and wisdom. As your aunt/uncle, I could not be more proud of you.
May God bless you on your very special day, I am so lucky to have such a special niece. Happy birthday.
If I was your fairy godmother, I would turn a pumpkin into a golden carriage for you. But I am your aunt, so you just get the pumpkin!
To our beautiful niece on her birthday. May your day be filled with laughter, presents, and cake!
On the day that you were born the angels got together and decided to create a niece come true!
My favorite things in the world: a bath full of bubbles, a sandy beach in the sun, and a day eating birthday cake with my favorite niece.
It was raining, it was pouring, my whole life was boring. And then you were born, a lovely niece who brings sunshine to all my days. Happy birthday!
When you were born you changed me in a way nobody else could have done – you made me into an aunt/uncle!
To my nutty niece, a very Happy Birthday and thank you for always raisin my spirits!
If there was a best niece competition, you would win first prize every year! Wishing you a very happy birthday from your loving aunt/uncle.
No niece in the world could make me feel prouder than I am of you. Have the wonderful birthday that you deserve.
If nieces were chocolates, you would be a Mars Bar because they are my favorite. Have a very chocolatey birthday.
You remind me of a glass of good champagne – you are bubbly and make your aunt very happy! Happy birthday.
If my niece were a planet, she would be Mercury because she is the closest to sunshine! Happy Birthday to the loveliest niece in the universe!
I hope you have a fantastic birthday niece! Thank you for always making me laugh and brightening my day.
Happy Birthday my brilliant niece! You deserve a perfect day of treats and fun.
Happy Birthday to my hilarious niece! Thank you for making family events twice as fun and three times as crazy!
Happy Birthday to my wonderful niece. It is impossible to put all that you mean to me into a few words, but know that I love you very much.
Happy Birthday to an amazing niece! A world without you would be far less magical and sparkly!
Sending lots of love to a niece who is a total blessing to my life. Every time we spend time together, I end up feeling happier and more positive about the world.
Wishing my niece, a wonderful day of celebrations. The day you were born is truly an occasion to celebrate.
Happy Birthday to a hilarious niece! Thank you for always making me laugh.
I am so lucky to have such a wonderful niece. Wishing you every happiness on your special day.
WOOHOO! My gorgeous niece has turned into an adult. Here is to all the amazing adventures life has in store for you.
Sending many happy returns to my niece on her birthday. Have the most wonderful day and may it set the precedent for a brilliant year!
May your day be filled with all your favorite things (especially cake. Lots and lots of cake!).
Happy Birthday Niece! Remember to make a wish when you cut the cake. I hope all your dreams come true.
Niece, I find you totally inspiring, because with every year you go from strength to strength. I wish you every happiness on your special day.
Sending lots of love and good wishes to my amazing niece. Enjoy your special day to the fullest.
Happiest of Birthdays niece! I hope your day is filled with treats and that everyone makes a huge fuss of you.
To a dear niece, I am sorry I am not there to celebrate your birthday in person. But I am sending lots of hugs and love from afar.
Happy Birthday to a niece who lights up the world. I am always inspired by your ability to see the positive in everything and everyone.
Sending all the best to my fabulous niece. You are so much fun to be around and always make me smile. Never change!
Sending hugs and kisses to my lovely niece on her birthday. May this new year in your life bring many happy occasions and more reasons to celebrate.
I wish I had some profound words of wisdom to say as you enter the perilous realms of adulthood, but I am afraid I have not quite mastered it myself!
Congratulations on becoming an adult! Here is to all the adventures that are yet to come.
Happy Birthday to my niece who has grown into a beautiful woman! Thank you for all those joyful memories and here is to making many more.
Now that you have reached adulthood, an exciting road lies ahead. While there may be twists and turns and ups and downs, know that I will always be here to guide you forward.
To my amazing niece on her 18th birthday, now that you are an adult I have only one piece of advice: chase your dreams and live the wonderful gift that is life to the absolute fullest.
Have an incredible day celebrating your birthday Niece. Remember to also celebrate how far you have come and how much there is yet to enjoy.
To the greatest niece, I hope you have the bestest, funest, fabulousest, joyfulest, amazingest birthday ever!
Niece, you have dazzled me from the day you were born. Such a perfect little human and growing better and better with every year.
Niece, I want you to know that you are such a blessing in my life. You bring such joy and enthusiasm to everything you do and you make me see things with more optimism. I hope you have the amazing birthday you most definitely deserve.
Sending all my love to a niece who has totally changed my life. Thank you for making the days brighter.
Happy Birthday lovely Niece! I hope the party is a hoot and the cake is scrumdidlyumptious!
Help! My niece is 21. If she is anything like her aunt/uncle, there is going to be some outrageous partying!
Hooray! You are one step closer to being old enough to have a drink with your crazy old Auntie/Uncle.
Happy Birthday. Aunt you impressed I remembered?
Happy 21st Birthday Niece! I hope you enjoy all the parties (and enjoy not having to do so in secret anymore!).
In order to fit all those candles, we are going to need a big cake. I guess that is something I could get used to!
Happy Birthday Niece, I cannot believe another year has passed! How about for every year you add, I take one off?
I am not happy you are getting older Niece, because it means I am too. At least we get to eat some cake because of it.
For your next birthday I am getting you a fire extinguisher. With all those candles your parties are becoming somewhat of a hazard!
Happy Birthday to a niece who makes me feel younger than I really am.
Happy Birthday to the luckiest girl in the world (lucky because you have the best Uncle/Aunt ever!).
Roses are red, lilies are white
You make everyday seem happy and bright.
Happy Birthday to my lovely niece.
Happy Birthday Niece! You have grown into such a smart and kind young woman. I am so proud of all that you achieve.
I have a niece so sweet and great
In fact, she is more of a mate
And on this special day
We must all shout hooray
As we have a great big celebrate.
Niece, we make a better pairing than peanut butter and jelly. Wishing you a very sweet birthday!
Roses are red, basil is green,
You’re the loveliest niece that there’s ever been.
Wishing a wonderful niece, a blessed and happy birthday. Thank you for all the wonderful memories. I cannot wait for all those still to come!
Happy Birthday to an amazing niece. Know that I am here for you in the good and the bad.
When the sun’s out I will celebrate all the good times and when it rains, I will shelter you from the storm. Have a wonderful birthday Niece, and know I will always be here for you.
Happy birthday to a niece who is smart, funny, and kind. You never fail to amaze me.
Wishing a wonderful niece, the happiest of birthdays. I cannot wait to celebrate with you very soon.
Roses are red, violets are blue,
Everyone needs a nice niece like you.
Sending lots of love on your birthday.
To a wonderfully wacky niece, a very Happy Birthday! Love your awfully outrageous Aunt/Uncle.
Happy Birthday to the best niece in the whole wide world! Love from, the best Aunt/Uncle in the whole wide world (not that I am biased).
Roses are red, carnations are pink
You have grown up so quickly in what feels like a blink!
Happy Birthday to a very special niece.
Your cool Aunt/Uncle wishes her/his even cooler niece a super-duper cool birthday.
Happy Birthday Niece. Have a wonderful day celebrating. I hope it is filled with sugar and spice and all things nice.
Happy Birthday to my gorgeous niece, who definitely gets her good looks from her aunt/uncle!
Happy Birthday to my funny, smart and totally gorgeous niece. (Thank god you inherited all those from your aunt/uncle).
To my niece who is crazy and mad
But not in the slightest way bad
A big three cheers
For all these great years
And the more that we still have to add.
Happy Birthday to the totally coolest niece in the whole wide world.
Sending lots of love to my niece on her birthday. It is the most amazing experience being your auntie. It is like being your mum but with only the fun bits!
Happy Birthday to the best niece I could ever wish for. You are such a joyful individual and it is truly a privilege to be your aunt/uncle.
Niece you are totally bonkers but also downright fabulous. As your bonkers but fabulous aunt/uncle, I could not be prouder!
Happy Birthday Niece! The world is your dancefloor, so get up and boogie because it is time to celebrate!
Wishing my totally awesome niece a very Happy Birthday. She is far cooler, smarter, and better at dancing than her old aunt could ever dream of.
Roses are red, sunshine is yellow,
You are sweeter than a plate of custard and jello.
From your favorite Uncle/Aunt, a very Happy Birthday to you!
To a joyful, happy girl, have the most wonderful birthday! Love from your grumpy, old Uncle.
Happy Birthday niece. Thank you for being a ray of sunshine to this old man.
Happy Birthday Niece. If it was not for you, I would be even more of a grumpy uncle!
To a fantastic niece, Happy Birthday! From an Uncle/Aunt who is immensely proud of everything you do.
Happy Birthday to a niece who is always the coolest person in the room! Love from, that dinosaur who always seems to come to family events.
To a niece who is totally hilarious, Happy Birthday and congratulations that you have had such a great teacher in your Uncle.
Roses are red, poppies are too,
When I think of flowers, it reminds me of you.
Wishing my beautiful, sweet niece a very happy birthday!
Wishing my totally awesome niece a very happy birthday. She is far cooler than her ancient uncle could ever dream of!
Sending best wishes to my lovely niece on her birthday. Being your uncle/aunt is such a gift and I treasure every moment I get to spend with you.
Happy Birthday to a niece who always amazes me with her kindness and intelligence. It really is a privilege to be your Uncle/Aunt.
Wishing my niece, the happiest of birthdays. When I first met you, you were a perfect bundle of joy. It has been so special watching you grow up into the woman you are today.
I cannot believe that little squishy ball I met at the hospital is now an adult! Time has flown, but it has made many amazing memories that I will treasure forever. Have a wonderful birthday Niece.
A very happy birthday to my now grown-up niece. How time has flown and how much you have grown.
Where has the time gone? I cannot believe my gorgeous niece is turning 18 and am so proud of the amazing woman she has become.
Wishing my brilliant niece an amazing day of birthday celebrations. Love from, your very proud Uncle/Aunt.
To a niece who is now an ADULT, a great big Happy Birthday to you! I tell you what, it is going to take me a while to come to terms with this!
Wishing my niece, a very Happy 18th! Although adulthood can sound scary, it is a really exciting world to be in and I will be here to support you through all its twists and turns.
To a special niece, sending lots of love and strength as you take on a new year in your life. I have every faith that your future is as wide as the horizon and as bright as the sun.
To a niece who has a huge heart, sending the warmest wishes on your special day. I hope it is as perfect as you deserve!
Sending all my love to a niece who never fails to brighten the mood on any day. Have a wonderful birthday and keep being as amazing as you already are.
Roses are red, the earth is blue/green,
You are the best niece that this world could have seen.
Sending lots of hugs and kisses on your birthday.
Other Birthday Wishes:
- Happy Birthday Daughter: If you are looking for words to express just how much your daughter means to you, on her special day, our list of 200+ birthday messages is the best place to look.
- Happy Birthday Nephew: In our collection of over 100 birthday messages for a nephew, you will find the perfect greeting for your nephew, whether they are young, old or just turning into an adult.